diff --git a/bandwidth/models/bxml/verbs/transfer.py b/bandwidth/models/bxml/verbs/transfer.py
index d5de1997..37832dbe 100644
--- a/bandwidth/models/bxml/verbs/transfer.py
+++ b/bandwidth/models/bxml/verbs/transfer.py
@@ -23,7 +23,7 @@ def __init__(
         password: str=None, fallback_username: str=None,
         fallback_password: str=None, tag: str=None,
         diversion_treatment: str=None, diversion_reason: str=None,
-        privacy: bool=None
+        privacy: bool=None, attestation_level: str=None, identity: str=None
     ):
         """Initialize a <Transfer> verb
 
@@ -63,6 +63,8 @@ def __init__(
                 This parameter is considered only when diversionTreatment is set to stack. Defaults is unknown.
                 Defaults to None.
             privacy (bool, optional): A boolean value to indicate whether the calling number should be hidden. Use transfer_caller_display_name to customize the displayed name. Default is false.
+            attestation_level (str, optional): The STIR/SHAKEN attestation level to sign the transferred call with. Can be A, B, or C. Only applies to accounts using the Hosted Signing Service. Cannot be combined with identity. Defaults to None.
+            identity (str, optional): A SIP Identity header value (PASSporT) signed by you, sent unmodified on the transferred call. Max length 2000 characters. Cannot be combined with attestation_level. Defaults to None.
         """
         self.transfer_to = transfer_to
         self.transfer_caller_id = transfer_caller_id
@@ -80,6 +82,8 @@ def __init__(
         self.diversion_treatment = diversion_treatment
         self.diversion_reason = diversion_reason
         self.privacy = privacy
+        self.attestation_level = attestation_level
+        self.identity = identity
         super().__init__(
             tag="Transfer",
             nested_verbs=self.transfer_to
@@ -102,7 +106,9 @@ def _attributes(self):
             "fallbackPassword": self.fallback_password,
             "tag": self.tag,
             "diversionTreatment": self.diversion_treatment,
-            "diversionReason": self.diversion_reason
+            "diversionReason": self.diversion_reason,
+            "attestationLevel": self.attestation_level,
+            "identity": self.identity
         }
 
     def add_transfer_recipient(self, recipient: Union[PhoneNumber, SipUri]):
diff --git a/test/unit/models/bxml/test_transfer.py b/test/unit/models/bxml/test_transfer.py
index 09f6fbaf..3f4abc35 100644
--- a/test/unit/models/bxml/test_transfer.py
+++ b/test/unit/models/bxml/test_transfer.py
@@ -37,7 +37,8 @@ def setUp(self):
             fallback_username="fallbackUser",
             fallback_password="fallbackPass",
             diversion_treatment="propagate",
-            diversion_reason="away"
+            diversion_reason="away",
+            attestation_level="A"
         )
 
     def test_instance(self):
@@ -46,10 +47,18 @@ def test_instance(self):
         assert isinstance(self.transfer, Verb)
 
     def test_to_bxml(self):
-        expected = '<Transfer transferCallerId="+19195554321" privacy="true" transferCallerDisplayName="test" callTimeout="15" transferCompleteUrl="https://example.com/transfer_complete" transferCompleteMethod="POST" transferCompleteFallbackUrl="https://fallback.example.com/transfer_complete" transferCompleteFallbackMethod="GET" username="user" password="pass" fallbackUsername="fallbackUser" fallbackPassword="fallbackPass" tag="test" diversionTreatment="propagate" diversionReason="away"><SipUri uui="test">sip@bw.com</SipUri></Transfer>'
+        expected = '<Transfer transferCallerId="+19195554321" privacy="true" transferCallerDisplayName="test" callTimeout="15" transferCompleteUrl="https://example.com/transfer_complete" transferCompleteMethod="POST" transferCompleteFallbackUrl="https://fallback.example.com/transfer_complete" transferCompleteFallbackMethod="GET" username="user" password="pass" fallbackUsername="fallbackUser" fallbackPassword="fallbackPass" tag="test" diversionTreatment="propagate" diversionReason="away" attestationLevel="A"><SipUri uui="test">sip@bw.com</SipUri></Transfer>'
         assert expected == self.transfer.to_bxml()
 
     def test_add_verb(self):
-        expected = '<Transfer transferCallerId="+19195554321" privacy="true" transferCallerDisplayName="test" callTimeout="15" transferCompleteUrl="https://example.com/transfer_complete" transferCompleteMethod="POST" transferCompleteFallbackUrl="https://fallback.example.com/transfer_complete" transferCompleteFallbackMethod="GET" username="user" password="pass" fallbackUsername="fallbackUser" fallbackPassword="fallbackPass" tag="test" diversionTreatment="propagate" diversionReason="away"><SipUri uui="test">sip@bw.com</SipUri><PhoneNumber tag="test">+19195551234</PhoneNumber></Transfer>'
+        expected = '<Transfer transferCallerId="+19195554321" privacy="true" transferCallerDisplayName="test" callTimeout="15" transferCompleteUrl="https://example.com/transfer_complete" transferCompleteMethod="POST" transferCompleteFallbackUrl="https://fallback.example.com/transfer_complete" transferCompleteFallbackMethod="GET" username="user" password="pass" fallbackUsername="fallbackUser" fallbackPassword="fallbackPass" tag="test" diversionTreatment="propagate" diversionReason="away" attestationLevel="A"><SipUri uui="test">sip@bw.com</SipUri><PhoneNumber tag="test">+19195551234</PhoneNumber></Transfer>'
         self.transfer.add_transfer_recipient(self.phone_number)
         assert expected == self.transfer.to_bxml()
+
+    def test_identity_to_bxml(self):
+        transfer = Transfer(
+            transfer_to=[self.sip_uri],
+            identity="eyJhbGciOiJFUzI1NiJ9.e30.c2ln;info=<https://example.com/cert.pem>;ppt=\"shaken\""
+        )
+        expected = '<Transfer identity="eyJhbGciOiJFUzI1NiJ9.e30.c2ln;info=<https://example.com/cert.pem>;ppt=&quot;shaken&quot;"><SipUri uui="test">sip@bw.com</SipUri></Transfer>'
+        assert expected == transfer.to_bxml()